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-rw-r--r--libstdc++-v3/testsuite/20_util/is_union/value.cc2
1 files changed, 2 insertions, 0 deletions
diff --git a/libstdc++-v3/testsuite/20_util/is_union/value.cc b/libstdc++-v3/testsuite/20_util/is_union/value.cc
index 7d0f2011fca..54df151e025 100644
--- a/libstdc++-v3/testsuite/20_util/is_union/value.cc
+++ b/libstdc++-v3/testsuite/20_util/is_union/value.cc
@@ -27,6 +27,7 @@ void test01()
// Positive tests.
static_assert(test_category<is_union, UnionType>(true), "");
+ static_assert(test_category<is_union, IncompleteUnion>(true), "");
// Negative tests.
static_assert(test_category<is_union, ClassType>(false), "");
@@ -47,4 +48,5 @@ void test01()
static_assert(test_category<is_union, int (ClassType::*) (int)>(false), "");
static_assert(test_category<is_union, int (int)>(false), "");
static_assert(test_category<is_union, EnumType>(false), "");
+ static_assert(test_category<is_union, IncompleteClass>(false), "");
}